TRIGONOMETRY : CLASS 11 : CHAPTER 3 Different systems of angles, radian measure, degree, AB and CD formulas,  transformations of angles in different quadrants and solution of trigonometric equations Trigonometry: It is the branch of mathematics in which we deal with the relation between the angle and sides of the right triangle. Table 1 0 o 30 o 45 o 60 o 90 o 180 o 270 o 360 o Sin 0 1/2 \[1/\sqrt{2}\] \[\sqrt{3}/2\] 1 0 -1 0 Cos 1 \[\sqrt{3}/2\] \[1/\sqrt{2}\] 1/2 0 -1 0 1 Tan 0 \[1/\sqrt{3}\] 1 \[\sqrt{3}\] \[\infty\] 0 \[\infty\] 0 Cot \[\infty\] \[\sqrt{3}\] 1 \[1/\sqrt{3}\] 0 \[\infty\] 0 \[\infty...

Binomial Theorem Class 11 Chapter 7 Basic concepts related to Binomial theorem chapter 7 class 11, Pascal's method of finding the coefficients, Expansion of Binomial Theorem, Its general term and total number of terms Binomial : Algebraic expression which contains only two terms is called binomial. In this blog we will discuss the followings: Method of expanding the binomials with different powers(Indexes). Explanation through Pascal's Triangle. Finding the coefficients by using Combinations. Total terms in the expansion of binomials. Expansion of Binomial Theorem. General term of Binomial Theorem. Method of finding the Algebraic Identities F irst of all we want to explain the method of expanding the binomials with different powers.  Powers of the binomial is called index of the binomial.  Let us  see the following identities.  (a + b) 0    = 1     (a + b) 1  =  a + b    (a + b) 2  = a 2  +  2ab +  b 2 ...